CN111689852B - 一种2,3,5,6-四氯苯甲酰氯的制备方法 - Google Patents
一种2,3,5,6-四氯苯甲酰氯的制备方法 Download PDFInfo
- Publication number
- CN111689852B CN111689852B CN202010718566.3A CN202010718566A CN111689852B CN 111689852 B CN111689852 B CN 111689852B CN 202010718566 A CN202010718566 A CN 202010718566A CN 111689852 B CN111689852 B CN 111689852B
- Authority
- CN
- China
- Prior art keywords
- chloride
- tert
- tetrachlorobenzoyl
- butyl
- pentachlorobenzene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- FIBQWJIYAMGUEN-UHFFFAOYSA-N 2,3,5,6-tetrachlorobenzoyl chloride Chemical compound ClC(=O)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl FIBQWJIYAMGUEN-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- -1 1,2,4,5-tetrachlorophenyl Grignard reagent Chemical class 0.000 claims abstract description 25
- DYHSDKLCOJIUFX-UHFFFAOYSA-N tert-butoxycarbonyl anhydride Chemical compound CC(C)(C)OC(=O)OC(=O)OC(C)(C)C DYHSDKLCOJIUFX-UHFFFAOYSA-N 0.000 claims abstract description 22
- CEOCDNVZRAIOQZ-UHFFFAOYSA-N pentachlorobenzene Chemical compound ClC1=CC(Cl)=C(Cl)C(Cl)=C1Cl CEOCDNVZRAIOQZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000007818 Grignard reagent Substances 0.000 claims abstract description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 8
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 26
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 23
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical group ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 14
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- NAMYKGVDVNBCFQ-UHFFFAOYSA-N 2-bromopropane Chemical compound CC(C)Br NAMYKGVDVNBCFQ-UHFFFAOYSA-N 0.000 claims description 9
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 claims description 9
- CTSLXHKWHWQRSH-UHFFFAOYSA-N oxalyl chloride Chemical compound ClC(=O)C(Cl)=O CTSLXHKWHWQRSH-UHFFFAOYSA-N 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 8
- 239000003381 stabilizer Substances 0.000 claims description 8
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 6
- 239000000460 chlorine Substances 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 6
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 6
- 125000002252 acyl group Chemical group 0.000 claims description 5
- 238000005660 chlorination reaction Methods 0.000 claims description 5
- 230000003197 catalytic effect Effects 0.000 claims description 4
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011592 zinc chloride Substances 0.000 claims description 3
- 235000005074 zinc chloride Nutrition 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- VXOGIOWLSCNCCK-UHFFFAOYSA-N tert-butyl 2,3,5,6-tetrachlorobenzoate Chemical compound C(C)(C)(C)OC(=O)C1=C(C(=CC(=C1Cl)Cl)Cl)Cl VXOGIOWLSCNCCK-UHFFFAOYSA-N 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 11
- 238000003786 synthesis reaction Methods 0.000 abstract description 9
- 230000002194 synthesizing effect Effects 0.000 abstract description 3
- 230000010933 acylation Effects 0.000 abstract 1
- 238000005917 acylation reaction Methods 0.000 abstract 1
- 238000004817 gas chromatography Methods 0.000 description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 9
- 238000001816 cooling Methods 0.000 description 9
- 238000010791 quenching Methods 0.000 description 8
- 230000000171 quenching effect Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 230000000977 initiatory effect Effects 0.000 description 6
- 239000012074 organic phase Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 238000006480 benzoylation reaction Methods 0.000 description 4
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 4
- 150000004795 grignard reagents Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- UYGUFXUBSNDUFA-UHFFFAOYSA-N 2,3,5,6-tetrachlorobenzoic acid Chemical compound OC(=O)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl UYGUFXUBSNDUFA-UHFFFAOYSA-N 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical class [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000004537 pulping Methods 0.000 description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 2
- OZQXEOSNFMMMRD-UHFFFAOYSA-M [Cl-].CC(C)[Mg+].C1CCOC1 Chemical compound [Cl-].CC(C)[Mg+].C1CCOC1 OZQXEOSNFMMMRD-UHFFFAOYSA-M 0.000 description 2
- CXHRAHMADXFVOW-UHFFFAOYSA-N [Mg].CC1OCCC1 Chemical compound [Mg].CC1OCCC1 CXHRAHMADXFVOW-UHFFFAOYSA-N 0.000 description 2
- 239000003242 anti bacterial agent Substances 0.000 description 2
- 229940124350 antibacterial drug Drugs 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000012847 fine chemical Substances 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
- ULYZAYCEDJDHCC-UHFFFAOYSA-N isopropyl chloride Chemical compound CC(C)Cl ULYZAYCEDJDHCC-UHFFFAOYSA-N 0.000 description 2
- UCDWWJKPBQZZNT-UHFFFAOYSA-N magnesium;oxolane Chemical compound [Mg].C1CCOC1 UCDWWJKPBQZZNT-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 125000002524 organometallic group Chemical group 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- JHBKHLUZVFWLAG-UHFFFAOYSA-N 1,2,4,5-tetrachlorobenzene Chemical compound ClC1=CC(Cl)=C(Cl)C=C1Cl JHBKHLUZVFWLAG-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- FFEARJCKVFRZRR-BYPYZUCNSA-N L-methionine Chemical compound CSCC[C@H](N)C(O)=O FFEARJCKVFRZRR-BYPYZUCNSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- RLKWLQMMAKSNPJ-UHFFFAOYSA-M [Cl-].ClC1(C(C=C(C(=C1)Cl)Cl)Cl)[Mg+] Chemical compound [Cl-].ClC1(C(C=C(C(=C1)Cl)Cl)Cl)[Mg+] RLKWLQMMAKSNPJ-UHFFFAOYSA-M 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012320 chlorinating reagent Substances 0.000 description 1
- MQYQOVYIJOLTNX-UHFFFAOYSA-N dichloromethane;n,n-dimethylformamide Chemical compound ClCCl.CN(C)C=O MQYQOVYIJOLTNX-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229930182817 methionine Natural products 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- PUPKPAZSFZOLOR-UHFFFAOYSA-N n,n-dimethylformamide;toluene Chemical compound CN(C)C=O.CC1=CC=CC=C1 PUPKPAZSFZOLOR-UHFFFAOYSA-N 0.000 description 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000273 veterinary drug Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/58—Preparation of carboxylic acid halides
- C07C51/60—Preparation of carboxylic acid halides by conversion of carboxylic acids or their anhydrides or esters, lactones, salts into halides with the same carboxylic acid part
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic Table
- C07F3/02—Magnesium compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
本发明公开了一种2,3,5,6‑四氯苯甲酰氯的制备方法,涉及有机合成领域。以五氯苯为原料与金属镁合成得到1,2,4,5‑四氯苯基格氏试剂;随后与Boc酸酐合成到2,3,5,6‑四氯苯甲酸叔丁酯;随后与酰化试剂反应,经蒸馏得到99.0%以上高纯度2,3,5,6‑四氯苯甲酰氯。采用本发明工艺路线,起始原料易得,成本低廉,总收率高,纯度高,方便了工业化的操作。
Description
技术领域
本发明属于有机合成技术领域,特别涉及多种抗菌药物及抗菌剂中间体2,3,5,6-四氯苯甲酰氯的制备方法的合成。
技术背景
2,3,5,6-四氯苯甲酰氯,CAS:4093-18-9,熔点58-62℃,常温下为白色或淡黄色固体。遇水易分解。是一类合成抗菌药物,具有非常良好的生物活性的重要中间体。在农药生产中,其可以与蛋氨酸及其醚进行苯甲酰化反应,获得的衍生物可以促进植物生长,改善植物状况或制备成杀菌杀虫剂;2,3,5,6-四氯苯甲酰氯广泛应用于兽药、医药及农药,随着此类新的衍生物的不断发现,其应用前景和市场前景十分看好。
其中[Journal of Organometallic Chemistry,1982,vol.225,#1,p.25-30]原料五氯苯与金属镁生产格氏试剂,再与二氧化碳加成得到2,3,5,6-四氯苯甲酸;推测最后与氯化亚砜苯甲酰化可得到2,3,5,6-四氯苯甲酰氯。路线如下:
上述合成方法中,各步反应收率较低且有异构杂质生成。因此,对合成工艺进行优化,减少异构体的生产,并寻找到合适的放大工艺,提高各个步骤收率,提高产品的市场竞争力是非常必要的。
发明内容
本发明针对上述问题,开发了一种2,3,5,6-四氯苯甲酰氯新的合成路线。一种2,3,5,6-四氯苯甲酰氯的制备方法,其特征在于,包括如下步骤:以五氯苯为原料与金属镁在异丙基溴/氯和催化量稳定剂作用下格氏交换得到2,3,5,6-四氯苯基氯化镁格氏试剂;随后与二碳酸二叔丁酯得到2,3,5,6-四氯苯甲酸叔丁酯;接着与酰氯化试剂和催化量水酰氯化得到2,3,5,6-四氯苯甲酰氯。采用本发明工艺路线,起始原料成本低廉且易得,工艺过程中均为精细化工中常见单元操作,反应操作简单,方便了工业化的操作,为下游抗菌剂的大规模应用提供基础。
本发明所述一种2,3,5,6-四氯苯甲酰氯的制备方法,包括如下步骤:
第一步,五氯苯与金属镁在异丙基溴/氯和稳定剂作用下交换得到2,3,5,6-四氯苯基格氏试剂;
第二步,2,3,5,6-四氯苯基格氏试剂与二碳酸二叔丁酯得到2,3,5,6-四氯苯甲酸叔丁酯;
第三步,2,3,5,6-四氯苯甲酸叔丁酯与酰氯化试剂和催化量水反应得到2,3,5,6-四氯苯甲酰氯。
采用反应方程式表示如下:
本发明所述合成方法,从2,3,5,6-四氯苯甲酰氯依次经过格氏试剂交换、加成、苯甲酰化三步完成,具体反应步骤为:
第一步:格氏试剂交换,将少量五氯苯、异丙基溴/氯和稳定剂溶于有机溶剂中,升温15-30℃滴加五氯苯和异丙基溴/氯混合溶液,再65-70℃反应,得到1,2,4,5-四氯苯基氯化镁格氏试剂。
进一步地,在上述技术方案中,第一步中,稳定剂为无水氯化锌或氯化锂,溶剂采用四氢呋喃或甲基四氢呋喃。
进一步地,在上述技术方案中,第一步中,五氯苯、金属镁、异丙基溴/氯与稳定剂摩尔比为1:1.15-1.20:0.98-1:0.1-0.2。
第二步:加成反应,将第一步的格氏试剂降温至-25℃至-15℃,滴加二碳酸二叔丁酯的四氢呋喃/2-甲基四氢呋喃溶液,稀盐酸或饱和氯化铵淬灭,有机相浓缩后,加入正庚烷打浆,过滤得到2,3,5,6-四氯苯甲酸叔丁酯。
进一步地,在上述技术方案中,第二步中,溶剂采用四氢呋喃或2-甲基四氢呋喃,淬灭试剂选自为稀盐酸或饱和氯化铵水溶液。反应温度为-25~-15℃。
进一步地,在上述技术方案中,第二步中,1,2,4,5-四氯苯基氯化镁、二碳酸二叔丁酯比为1:1.2-1.3。
第三步:苯甲酰化反应,2,3,5,6-四氯苯甲酸叔丁酯和微量水溶液有机溶剂中,滴加酰化试剂,升温至35-45℃反应,浓缩,减压蒸馏得到2,3,5,6-四氯苯甲酰氯。
进一步地,在上述技术方案中,第三步中,酰化试剂选自氯化亚砜或草酰氯。
进一步地,在上述技术方案中,第三步中2,3,5,6-四氯苯甲酸叔丁酯、酰氯化试剂、水摩尔比为1:1.32-1.39:0.05-0.08,在110-123℃减压蒸馏得到产品。
发明有益效果:
采用本发明工艺路线,原料低廉易得,反应操作简单,四步操作连续,在最后一步进行减压蒸馏纯化,总收率在62-64%,最终产品纯度在99.0%以上。路线中起始原料易得,工艺过程中均为精细化工中常见单元操作,反应连续性增加,方便了工业化的操作。
具体实施例:
实施例1
2,3,5,6-四氯苯甲酰氯的合成
第一步:2,3,5,6-四氯苯甲酸叔丁酯的合成
向2L反应瓶内投入五氯苯12.5g(0.05mol,0.1eq)、3g氯化锌、异丙基溴6.1g(0.05mol,0.1eq)、金属镁14.4g(0.6mol,1.2eq)和四氢呋喃750mL,升高温度至15-30℃引发,引发后控制温度15-45℃滴加五氯苯112.5g(0.45mol,0.9eq)、异丙基溴55.4g(0.45mol,0.9eq)和四氢呋喃150mL混合溶液,滴加完毕后,升温至65-70℃反应3小时,取样淬灭后GC检测原料五氯苯<2%。氮气保护下降温至-25℃,滴加含二碳酸二叔丁酯(Boc酸酐)130.9g(0.6mol,1.2eq)和100mL四氢呋喃的混合溶液,滴加过程控制温度在-15~-25℃,滴加结束后,缓慢升温至10-15℃,反应2-3小时,降温至-5~0℃,滴加3%盐酸水溶液进行淬灭,pH调节至3.5-4.5分层,保留有机相,水相用乙酸乙酯1000mL萃取一次,合并有机相浓缩,降温至0~5℃,滴加正庚烷850g,打浆3-5小时,过滤,烘干得到2,3,5,6-四氯苯甲酸叔丁酯128.9g,GC检测化学纯度96.9%,收率81.6%。1HNMR(400MHz,CDCl3):δ=7.91(m,1H),1.1(s,9H).GC-MS m/z 317。
第二步:2,3,5,6-四氯苯甲酰氯的合成。
向1L反应瓶内投入2,3,5,6-四氯苯甲酸叔丁酯128g(0.405mol,1eq)、二氯甲烷750g和水11.25g,控制温度20℃,滴加氯化亚砜120.5g(1.013mol,2.5eq),滴加结束后,20-30℃反应1-2小时,取样GC检测原料<0.5%。物料减压浓缩,加入甲苯750mL替换二氯甲烷和氯化亚砜,共替换2-3次,再浓缩至不流液,减压蒸馏(110-123℃,冷凝器加入55℃热水)得到2,3,5,6-四氯苯甲酰氯100.4g,GC检测化学纯度99.1%,收率89.1%。GC-MS m/z 279。
实施例2
2,3,5,6-四氯苯甲酰氯的合成
第一步:2,3,5,6-四氯苯甲酸叔丁酯的合成
向2L反应瓶内投入五氯苯12.5g(0.05mol,0.1eq)、3g无水氯化锂、异丙基氯4.0g(0.05mol,0.1eq)、金属镁14.4g(0.6mol,1.2eq)和2-甲基四氢呋喃750mL,升高温度至15-30℃引发,引发后控制温度15-45℃滴加五氯苯112.5g(0.45mol,0.9eq)、异丙基氯35.3g(0.45mol,0.9eq)和2-甲基四氢呋喃150mL混合溶液,滴加完毕后,升温至65-70℃反应3小时,取样淬灭后GC检测原料五氯苯<2%。氮气保护下降温至-25℃,滴加含二碳酸二叔丁酯(Boc酸酐)130.9g(0.6mol,1.2eq)和100mL甲基四氢呋喃的混合溶液,滴加过程控制温度在-15~-25℃,滴加结束后,缓慢升温至10-15℃,反应2-3小时,降温至-5~0℃,滴加3%盐酸水溶液进行淬灭,pH调节至3.5-4.5分层,保留有机相(单独浓缩,回收2-甲基四氢呋喃),水相用乙酸乙酯1000mL萃取一次,合并有机相,饱和食盐水水洗一次,有机相浓缩,降温至0~5℃,滴加正庚烷850g,打浆3-5小时,过滤,烘干得到2,3,5,6-四氯苯甲酸叔丁酯127.5g,GC纯度97.8%,收率80.7%。GC-MS m/z317。
向1L反应瓶内投入2,3,5,6-四氯苯甲酸叔丁酯128g(0.405mol,1eq)、二氯甲烷750g和水6.7g,控制温度20℃,滴加草酰氯63.5g(0.5mol,1.235eq),滴加结束后,35-45℃反应12-16小时,取样GC检测原料<0.5%。物料减压浓缩,加入氯苯750mL替换二氯甲烷和草酰氯,共替换2-3次,再浓缩至不流液,减压蒸馏(110-123℃,冷凝器加入55℃热水)得到2,3,5,6-四氯苯甲酰氯98.8g,GC检测化学纯度99.0%,收率87.7%。GC-MS m/z 279。
对比实施例1(文献实例)
文献[Journal of Organometallic Chemistry,1982,vol.225,#1,p.25-30]中报道的的合成路线如下:
第一步:向250mL反应瓶内投入五氯苯1.25g(0.005mol,0.1eq)、金属镁1.44g(0.06mol,1.2eq)和四氢呋喃100mL,升高温度至15-30℃引发,引发后控制温度15-45℃滴加五氯苯11.25g(0.45mol,0.9eq),滴加完毕后,升温至65-70℃反应1小时,取样淬灭后GC检测原料五氯苯10%、1,2,4,5-四氯苯78%。
第二步:氮气保护下降温至-25℃,通入干燥的二氧化碳气体(过量),缓慢升温至10-15℃,反应2-3小时,降温至-5~0℃,滴加10%盐酸水溶液进行淬灭,调节pH=1-2,加入5%氢氧化钠水溶液调节pH=12-13,分层,保留水相,水相用盐酸调节pH=2-3,溶剂萃取,浓缩得到2,3,5,6-四氯苯甲酸7.42g,HPLC检测化学纯度95.7%,收率57.1%。
第三步:向250mL反应瓶内投入2,3,5,6-四氯苯甲酸7g和二氯甲烷70mL,加入吡啶0.1g,缓慢滴加二氯亚砜3.52g(0.0296mol,1.1eq),升温至回流反应2-3小时,TLC检测原料无剩余,物料减压浓缩,加入甲苯75mL替换二氯甲烷和二氯亚砜,共替换2-3次,再浓缩至不流液,减压蒸馏(110-123℃,冷凝器加入55℃热水)得到2,3,5,6-四氯苯甲酰氯6.2g,GC检测化学纯度98.9%,收率82.9%。
对比实施例2
第一步:参照(文献实例)的操作,改变反应条件得到表1结果。
表1
实验编号 | 碱类别 | 溶剂 | 反应温度 | GC含量 |
1 | 金属镁 | 四氢呋喃 | 10℃至15℃ | 71% |
2 | 金属镁 | 2-甲基四氢呋喃 | 15℃至45℃ | 74% |
3 | 异丙基氯化镁 | 四氢呋喃 | -10℃至0℃ | 67% |
4 | 异丙基溴化镁 | 2-甲基四氢呋喃 | -5℃至0℃ | 72% |
第二步:参照(文献实例)的操作,改变反应条件得到表2结果。
表2
实验编号 | 碱类别 | 溶剂 | 二氧化碳当量 | 收率% |
1 | 金属镁 | 四氢呋喃 | 1.5 | 57% |
2 | 金属镁 | 2-甲基四氢呋喃 | 2.0 | 58% |
3 | 异丙基氯化镁 | 四氢呋喃 | 3 | 62% |
4 | 异丙基溴化镁 | 2-甲基四氢呋喃 | 7 | 61% |
第三步:参照(文献实例)的操作,改变反应条件得到表3结果。
表3
实验编号 | 催化剂 | 溶剂 | 收率 |
5 | 吡啶 | 二氯甲烷 | 82% |
6 | N,N-二甲基甲酰胺 | 甲苯 | 80% |
7 | 吡啶 | 甲苯 | 79% |
8 | N,N-二甲基甲酰胺 | 二氯甲烷 | 85% |
以上实施例描述了本发明的基本原理、主要特征及优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明原理的范围下,本发明还会有各种变化和改进,这些变化和改进均落入本发明保护的范围内。
Claims (3)
1.一种2,3,5,6-四氯苯甲酰氯的制备方法,其特征在于,包括如下步骤:
第一步,五氯苯与金属镁在异丙基溴/氯和稳定剂作用下交换得到2,3,5,6-四氯苯基格氏试剂;所述稳定剂为无水氯化锌或无水氯化锂,溶剂采用四氢呋喃或2-甲基四氢呋喃;反应温度为15-70℃;
第二步,2,3,5,6-四氯苯基格氏试剂与二碳酸二叔丁酯得到2,3,5,6-四氯苯甲酸叔丁酯;反应采用四氢呋喃或2-甲基四氢呋喃,反应温度为-25℃至-15℃;
第三步,2,3,5,6-四氯苯甲酸叔丁酯与酰氯化试剂和催化量水反应得到2,3,5,6-四氯苯甲酰氯;所述酰氯化试剂选自二氯亚砜或草酰氯,反应温度为35-45℃,溶剂采用二氯甲烷、甲苯、氯苯或其混合体系;所述2,3,5,6-四氯苯甲酸叔丁酯、酰氯化试剂、水摩尔比为1:1.32-1.39:0.05-0.08,反应2-5小时,产品在110-123℃减压蒸馏。
2.根据权利要求1所述2,3,5,6-四氯苯甲酰氯的制备方法,其特征在于:第一步中,五氯苯、金属镁、异丙基溴/氯与稳定剂摩尔比为1:1.15-1.20:0.98-1:0.1-0.2。
3.根据权利要求1所述2,3,5,6-四氯苯甲酰氯的制备方法,其特征在于:第二步中,2,3,5,6-四氯苯基格氏试剂与二碳酸二叔丁酯比为1:1.2-1.3。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010718566.3A CN111689852B (zh) | 2020-07-23 | 2020-07-23 | 一种2,3,5,6-四氯苯甲酰氯的制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010718566.3A CN111689852B (zh) | 2020-07-23 | 2020-07-23 | 一种2,3,5,6-四氯苯甲酰氯的制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111689852A CN111689852A (zh) | 2020-09-22 |
CN111689852B true CN111689852B (zh) | 2023-01-13 |
Family
ID=72486623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010718566.3A Active CN111689852B (zh) | 2020-07-23 | 2020-07-23 | 一种2,3,5,6-四氯苯甲酰氯的制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111689852B (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112174788B (zh) * | 2020-11-02 | 2023-06-20 | 浙江凯普化工有限公司 | 一种2,2,6,6-四乙基-3,5-庚烷二酮的制备方法 |
CN114605240B (zh) * | 2020-12-09 | 2023-06-06 | 宜昌人福药业有限责任公司 | 一种盐酸艾司氯胺酮合成中间体的制备方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB833218A (en) * | 1955-04-29 | 1960-04-21 | Hooker Electrochemical Co | Preparation of 2, 3, 5, 6-tetrachlorobenzoyl halides and their derivatives, particularly for the production of herbicidal compositions |
DE3260025D1 (en) * | 1981-02-07 | 1984-02-02 | Bayer Ag | Process for the preparation of polychlorobenzoyl chlorides |
JPS63270640A (ja) * | 1987-04-28 | 1988-11-08 | Ihara Chem Ind Co Ltd | 3,4,5−トリフルオロ安息香酸誘導体およびその製造方法 |
CN107176908A (zh) * | 2017-05-12 | 2017-09-19 | 江苏科菲特生化技术股份有限公司 | 一种2‑甲基‑3‑甲氧基苯甲酰氯的合成方法 |
CN107311862A (zh) * | 2017-06-19 | 2017-11-03 | 南京红杉生物科技有限公司 | 一种西他列汀中间体的制备方法 |
CN107793313A (zh) * | 2016-08-31 | 2018-03-13 | 江苏万隆科技有限公司 | 四氯苯甲酰氯的合成方法 |
-
2020
- 2020-07-23 CN CN202010718566.3A patent/CN111689852B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB833218A (en) * | 1955-04-29 | 1960-04-21 | Hooker Electrochemical Co | Preparation of 2, 3, 5, 6-tetrachlorobenzoyl halides and their derivatives, particularly for the production of herbicidal compositions |
DE3260025D1 (en) * | 1981-02-07 | 1984-02-02 | Bayer Ag | Process for the preparation of polychlorobenzoyl chlorides |
JPS63270640A (ja) * | 1987-04-28 | 1988-11-08 | Ihara Chem Ind Co Ltd | 3,4,5−トリフルオロ安息香酸誘導体およびその製造方法 |
CN107793313A (zh) * | 2016-08-31 | 2018-03-13 | 江苏万隆科技有限公司 | 四氯苯甲酰氯的合成方法 |
CN107176908A (zh) * | 2017-05-12 | 2017-09-19 | 江苏科菲特生化技术股份有限公司 | 一种2‑甲基‑3‑甲氧基苯甲酰氯的合成方法 |
CN107311862A (zh) * | 2017-06-19 | 2017-11-03 | 南京红杉生物科技有限公司 | 一种西他列汀中间体的制备方法 |
Non-Patent Citations (3)
Title |
---|
Grignard Reagents on a Tab: Direct Magnesium Insertion under Flow Conditions;Lena Huck et al.;《organic letters》;20170628;第19卷;表1-2 * |
The Conversion of tert-Butyl Esters to Acid Chlorides Using Thionyl Chloride;Jacob A;《Journal of organic chemistry》;20170214;第82卷;表1,3 * |
the preparation and some reactions of 2,3,5,6-tetrachloro-phenylmagnesium chloride;M.T.Rahman;《journal of organometallic chemistry》;19821231;第225卷;第28页实验部分 * |
Also Published As
Publication number | Publication date |
---|---|
CN111689852A (zh) | 2020-09-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11465970B2 (en) | Method for synthesis of Roxadustat and intermediate compounds thereof | |
EP2303828B1 (de) | Verfahren zur herstellung von substituierten biphenylen | |
CN111689852B (zh) | 一种2,3,5,6-四氯苯甲酰氯的制备方法 | |
CN111018740B (zh) | 一种4-溴-2-氰基-5-氟苯甲酸甲酯的合成方法 | |
CN107629099B (zh) | 一种索非布韦中间体的制备工艺 | |
CN110498744B (zh) | 一种1-乙基-3-硝基苯的制备方法 | |
CN109553536B (zh) | 一种脂肪烷基二甲基苄基季铵盐的合成方法 | |
CN113461583B (zh) | 一种虾青素的合成方法 | |
CN111170846A (zh) | 一种制备3,3-二甲基-2-氧-丁酸的方法 | |
JP4467890B2 (ja) | チオフェンのクロロメチル化 | |
CN111533656A (zh) | 一种4-甲氧基-3-氧代丁酸叔丁酯的合成方法 | |
EP2007742A1 (en) | Process for producing 3-[4-(1,1-dimethyl-propyl)-phenyl]-2-methyl-propionaldehyde and cis-4-{3-[4-(1,1-dimethyl-propyl)-phenyl]-2-methyl-propyl}-2,6-dimethyl-morpholine (amorolfine) | |
SK15832002A3 (sk) | Spôsob prípravy derivátov benzoovej kyseliny substituovanej trifluoretoxyskupinou | |
CN110950919B (zh) | 一种索非布韦的合成方法 | |
JP3438084B2 (ja) | 3,4−ジクロロベンゾニトリルの製造法 | |
JP2897833B2 (ja) | 2―クロロ―4―フルオロフェノールの製造方法 | |
KR100448642B1 (ko) | 페닐프로피온산 유도체의 제조방법 | |
JP3214904B2 (ja) | 1,3−プロパンジオール誘導体の製造法 | |
CN117683003A (zh) | 一种恩格列净中间体合成新工艺 | |
JP2016199489A (ja) | 2−アミノ−6−メチルニコチン酸エステルの製造方法 | |
KR100448641B1 (ko) | 2-(4-할로메틸페닐)프로피온산의 제조 방법 | |
KR20220114159A (ko) | 메탈락실-엠의 제조방법 | |
CN113292412A (zh) | 一种3,4-二氟-2-甲基苯甲酸及其中间体的合成方法 | |
CN113387874A (zh) | 6,6-二烷基哌啶-2-羧酸化合物的合成方法 | |
JPH0751539B2 (ja) | 2,6‐ジハロアニリン誘導体の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |